Shelly's new RC control system is taking shape! I'm realizing it will be wise to have a dedicated 12v system for linear actuators, speed controllers, and RC receivers. When using a 36v -> 12v Smakn converted, my 36V batteries would stop working (odd). I assume this is due to come kind of protection circuit on the batteries becoming confused. It was much easier to get everything working when plugging all 12v components into their own 12v battery. 

Maybe hooking up all the grounds will help....